Optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof
US-2025208338-A1 · Jun 26, 2025 · US
doped with molecular hydrogen
doped with molecular hydrogen · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C03B2201/21 |
| Official title | doped with molecular hydrogen |
| Display label | doped with molecular hydrogen |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 9 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preform for optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof
US-12276829-B2 · Apr 15, 2025 · US
Photonic crystal fiber, a method of production thereof and a supercontinuum light source
US-2025067924-A1 · Feb 27, 2025 · US
Reducing light-induced loss in optical fibre
US-2025052946-A1 · Feb 13, 2025 · US
Photonic crystal fiber, a method of production thereof and a supercontinuum light source
US-12169303-B2 · Dec 17, 2024 · US
Reducing light-induced loss in optical fibre
US-12135453-B2 · Nov 5, 2024 · US
Water-containing glass-based articles with high indentation cracking threshold
US-2024343635-A1 · Oct 17, 2024 · US
Optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof
US-2024319436-A1 · Sep 26, 2024 · US
Water-containing glass-based articles with high indentation cracking threshold
US-12054423-B2 · Aug 6, 2024 · US
Photonic crystal fiber, a method of production thereof and a supercontinuum light source
US-2024111087-A1 · Apr 4, 2024 · US
Laser system using low-chlorine hollow core optical fiber
US-11947160-B2 · Apr 2, 2024 · US
Synthetic quartz glass substrate and making method
US-11851364-B2 · Dec 26, 2023 · US
Water-containing glass-based articles with high indentation cracking threshold
US-2023357071-A1 · Nov 9, 2023 · US
Reducing light-induced loss in optical fibre
US-2023305222-A1 · Sep 28, 2023 · US
Water-containing glass-based articles with high indentation cracking threshold
US-11760685-B2 · Sep 19, 2023 · US
Photonic crystal fiber, a method of production thereof and a supercontinuum light source
US-11719881-B2 · Aug 8, 2023 · US
Reducing light-induced loss in optical fibre
US-11698484-B2 · Jul 11, 2023 · US
Optical fiber with improvements relating to loss and its use, method of its production and use thereof
US-2023161100-A1 · May 25, 2023 · US
Water-containing glass-based articles with high indentation cracking threshold
US-11643356-B2 · May 9, 2023 · US
Optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof
US-11573366-B2 · Feb 7, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C03B2201/21?
- CPC C03B2201/21 is the Cooperative Patent Classification code for “doped with molecular hydrogen.”
- How many patents are filed under CPC C03B2201/21 (doped with molecular hydrogen)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC C03B2201/21 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).